Genetic parameters and efficiency of early selection for half rotation-aged growth and form traits in Pinus taeda in China

Yang, Huixiao; Liu, Tianyi; Liu, Chunxin; Wang, Jinbang; Chen, Kaer; Zhong, Wang; Bing-quan, Chen; Huang, Shaowei

doi:10.1515/sg-2013-0033

Cited by 7 publications

(13 citation statements)

References 18 publications

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“…1). Yang et al (2013) showed the first years are important to plant recover the root system and adapt to the new environment, if it does not occur, mortality rate of seedlings may be high, as observed in PG. Furthermore, lack of water in first weeks after planting may be responsible by plant mortality, the first month after planting there was less rainfall in relation to the normal April month at PG.…”

Section: Individual Deviance Analysis and Genetic Parameters Estimationmentioning

confidence: 98%

Adaptability, stability, productivity and genetic parameters in slash pine second-generation families in early age

et al. 2016

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The study was conducted to estimate the stability, adaptability, productivity and genetic parameters in Slash pine second-generation half-sib families, considering phenotypic traits in early age. Forty-four families from a first generation seed orchard in Colombo-PR, Brazil, were used in this study. Two progenies tests were established in a randomized complete block design. The first test was implemented in March 2009 in Ribeirão Branco, São Paulo state, containing 40 blocks, one tree per plot, 44 treatments (progenies) and 6 controls. Another test was implemented in Ponta Grossa, Paraná state, using the same experimental design and number of plants per plot, and with 24 treatments, 32 blocks. The growth traits evaluated were total height, diameter at breast height (dbh) and wood volume, within five years. The form traits evaluated were stem form, branch thickness, branch angle, number of branches, fork and fox tail five years after planting. Deviance analysis and estimates of stability, adaptability, productivity and genetic parameters were performed using the methods of best linear unbiased predictor (BLUP) and residual maximum likelihood (REML). There was significant variation among progenies for growth and form traits. Considerable genetic variation was detected mainly for wood volume. High coefficients of genetic variation and heritability showed low environmental influence on phenotypic variation, which is important for the prediction of genetic gain by selection. Crosses between different progenies individuals groups will be prioritized for obtaining heterotics genotypes and increase the probability of obtaining high specific combining ability.

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Section: Individual Deviance Analysis and Genetic Parameters Estimationmentioning

confidence: 98%

Adaptability, stability, productivity and genetic parameters in slash pine second-generation families in early age

et al. 2016

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“…The location of this trial could be categorized as a marginal site for white jabon, and according to Wahyudi (2012), the economical rotation could be reached at 13 years. The next evaluation would be carried out at 5 and 6 years (half rotation age) predicted that the growth would be more stable (Yang et al 2013).…”

Section: Balanites Aegyptiacamentioning

confidence: 99%

Genetic diversity in the growth of white jabon (Neolamarckia cadamba) provenance-progeny test: Comparing study in the nursery and field

Sudrajat¹,

Yulianti²,

Rustam³

et al. 2019

Biodiversitas

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Abstract. Sudrajat DJ, Yulianti, Danu, Rustam E, Suwandhi I. 2019. Genetic diversity in the growth of white jabon (Neolamarckia cadamba) provenance-progeny test: Comparing study in the nursery and field. Biodiversitas 20: 1325-1332. Results of the provenance-progeny test in seedling and field test of white jabon (Neolamarckia cadamba) at Parung Panjang, Bogor District, West Java Province, Indonesia are reported and discussed. Twelve provenances representing 105 families were tested in nursery and field using randomized complete block design. Seedling height, root collar diameter, sturdiness quotient, shoot dry weight, root dry weight and shoot-root ratio was measured at four months, while as the growth assessment was carried out on survival, height and stem diameter at the age of 2 and 4 years. The result showed that genetic variation was found to be higher among families within provenances than the variation among provenances for all parameters indicating the family effect had the highest contribution on the growth and survival. Based on family and provenance mean, most of the seedling parameters were significantly correlated with the others, but most of seedling parameters were not significantly correlated with plant growth at 2 and 4 years. The longitudinal cline was significantly correlated with shoot dry weight, root dry weight, and shoot-root ratio indicated that the white jabon seeding parameters in natural populations may have greater in humid (higher precipitation) than in drier locations. This was likely to suggest that the family or provenance selections based on seedling growth in the nursery may not be very effective because heritability of most growth variables is likely to be low.

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“…This may have been due to the fact that the growth of HT is more affected by leaf area after the forest was closed. Large effects of genotype × environment interactions on growth traits have been reported in other studies [29,38,39].…”

Section: Discussionmentioning

confidence: 56%

“…Potential contributing factors include differences in the studied species, competitive pressures, growth phases, and silvicultural factors, but further investigation is needed to clarify this issue [30]. The most widely used model for exploring age-age genetic correlations is that of Lambeth (1980), which has been tested by several researchers working on tree species [7,30,39,45]. The age-age genetic correlations were generally stronger than the corresponding phenotypic correlations, in agreement with observations on Larix principis-rupprechtii [30].…”

Section: Discussionmentioning

confidence: 99%

Multi-Level Genetic Variation and Selection Strategy of Neolamarckia cadamba in Successive Years

Que

et al. 2021

Forests

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Neolamarckia cadamba (Roxb.) Bosser is a tropical evergreen broadleaf tree species that could play an important role in meeting the increasing demand for wood products. However, multi-level genetic variation and selection efficiency for growth traits in N. cadamba is poorly characterized. We therefore investigated the efficiency of early selection in N. cadamba by monitoring the height (HT), diameter at breast height (DBH), and tree volume (V) in 39 half-sib families from 11 provenances at ages 2, 3, 4, 5, and 6 years in a progeny test. Age-related trends in growth rate, genetic parameters in multi-level, efficiency of early selection, and realized gain in multi-level for growth traits were analyzed. The result showed that genetic variation among families within provenances was higher than that among provenances. The estimated individual heritability values for the growth traits ranged from 0.05 to 0.26, indicating that the variation of growth traits in N. cadamba was subject to weak or intermediate genetic control. The age–age genetic correlations for growth traits were always positive and high (0.51–0.99), and the relationships between the genetic/phenotypic correlations and the logarithm of the age ratio (LAR) were described well by linear models (R2 > 0.85, except the fitting coefficient of genetic correlation and LAR for HT was 0.35). On the basis of an early selection efficiency analysis, we found that it is the best time to perform early selection for N. cadamba at age 5 before half-rotation, and the selection efficiencies were 157.28%, 151.56%, and 127.08% for V, DBH, and HT, respectively. Higher realized gain can be obtained by selecting superior trees from superior families. These results can be expected to provide theoretical guidance and materials for breeding programs in N. cadamba and can even be a reference for breeding strategies of other fast-growing tree species.

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Genetic parameters and efficiency of early selection for half rotation-aged growth and form traits in Pinus taeda in China

Cited by 7 publications

References 18 publications

Adaptability, stability, productivity and genetic parameters in slash pine second-generation families in early age

Adaptability, stability, productivity and genetic parameters in slash pine second-generation families in early age

Genetic diversity in the growth of white jabon (Neolamarckia cadamba) provenance-progeny test: Comparing study in the nursery and field

Multi-Level Genetic Variation and Selection Strategy of Neolamarckia cadamba in Successive Years

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